mirror of
https://github.com/dborth/fceugx.git
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68 lines
1.9 KiB
C++
68 lines
1.9 KiB
C++
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/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2016 CaH4e3
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* 8-in-1 Rockin' Kats, Snake, (PCB marked as "8 in 1"), similar to 12IN1,
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* but with MMC3 on board, all games are hacked the same, Snake is buggy too!
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*
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* no reset-citcuit, so selected game can be reset, but to change it you must use power
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*
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static void BMC8IN1CW(uint32 A, uint8 V) {
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setchr1(A, ((EXPREGS[0] & 0xC) << 5) | (V & 0x7F));
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}
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static void BMC8IN1PW(uint32 A, uint8 V) {
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if(EXPREGS[0] & 0x10) { // MMC3 mode
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setprg8(A, ((EXPREGS[0] & 0xC) << 2) | (V & 0xF));
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} else {
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setprg32(0x8000, EXPREGS[0] & 0xF);
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}
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}
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static DECLFW(BMC8IN1Write) {
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if(A & 0x1000) {
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EXPREGS[0] = V;
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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} else {
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if(A < 0xC000)
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MMC3_CMDWrite(A, V);
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else
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MMC3_IRQWrite(A, V);
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}
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}
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static void BMC8IN1Power(void) {
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EXPREGS[0] = 0;
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GenMMC3Power();
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SetWriteHandler(0x8000, 0xFFFF, BMC8IN1Write);
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}
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void BMC8IN1_Init(CartInfo *info) {
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GenMMC3_Init(info, 128, 128, 0, 0);
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cwrap = BMC8IN1CW;
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pwrap = BMC8IN1PW;
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info->Power = BMC8IN1Power;
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AddExState(EXPREGS, 1, 0, "EXPR");
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}
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